include[HTML_REMOVED]
include[HTML_REMOVED]
using namespace std;
int main(){
int n;
cin>>n;
vector[HTML_REMOVED]> dp(n+1,vector[HTML_REMOVED](3,0));
dp[1][0]=0;
dp[1][1]=0;
dp[1][2]=1;
for(int i=2;i<=n;i){
int cur=i;
while(cur%2==0){
dp[i][0];
cur/=2;
}
while(cur%5==0){
dp[i][1];
cur/=5;
}
dp[i][2]=(cur*dp[i-1][2])%10;
dp[i][1]+=dp[i-1][1];
dp[i][0]+=dp[i-1][0];
}
dp[n][0]-=dp[n][1];
for(int i=0;i<dp[n][0];i){
dp[n][2]=(dp[n][2]*2)%10;
}
cout<<dp[n][2];
return 0;
}